Patents by Inventor Eric C. Greyson

Eric C. Greyson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for producing hydrophobically modified acrylic rheology modifers
    Publication number: 20110237745
    Abstract: A method for preparing hydrophobically modified rheology modifiers; said method comprising polymerizing a monomer mixture having two or more components. The first component is H2C?C(R)C(O)X(CH2CH2O)n(CH(R?)CH2O)mR? or H2C?C(R)C6H4C(CH3)2NHCO2(CH2CH2O)n(CH(R?)CH2O)mR?, wherein X is O or NH, R is H or CH3, R? is C1-C2 alkyl, R? is C8-C22 alkyl or C8-C16 alkylphenyl, n is an average number from 6-100 and m is an average number from 0-50, provided that n?m and m+n is 6-100. The second component is a C3-C6 carboxylic acid monomer; wherein polymerization occurs in the presence of an oxidant, a reductant and a metal catalyst, and substantially in the absence of a peroxide, hydroperoxide or perester containing an alkyl group having at least five carbon atoms.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 29, 2011
    Inventors: Barrett Richard Bobsein, Marianne Patricia Creamer, Eric C. Greyson, Joseph Manna, Thomas Madle